Larimar
Dominican Republic
19.66 carats
© gemselect.com
Larimar is a trade name for massive light- to sky-blue variety of Pectolite from Dominican Republic. This compact material yields attractive cabochons.
Larimar may be used as a turquoise substitute.
Larimar Gemstones by Colour
This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
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Larimar Gemstones by Size
This table shows distribution of Larimar gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:2.74 cts
Heaviest:54.0 cts
Average:14.06 cts
Total photos:27
Do you have a larger Larimar? Why not upload a photo?
| General Information | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A variety or type of: | Pectolite | |||||||||||||
| Chemical Formula |
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| Physical Properties of Larimar | ||||||||||||||
| Mohs Hardness | 5, Blue Chart Gem Identification (2010) | |||||||||||||
| Specific Gravity | 2.74 to 2.90, Blue Chart Gem Identification (2010) | |||||||||||||
| Optical Properties of Larimar | ||||||||||||||
| Refractive Index | 1.595 to 1.645, Blue Chart Gem Identification (2010) More from other references | |||||||||||||
| Optical Character | Biaxial/+, Gemmological Tables (2004) | |||||||||||||
| Birefringence | 0.032 to 0.038, Gemmological Tables (2004) More from other references | |||||||||||||
| Colour | ||||||||||||||
| Colour (General) | Blue, bluish-white, white, gray, Gemmological Tables (2004) | |||||||||||||
| Causes of Colour | Colouring agent is copperLapidary Journal (1999) | |||||||||||||
| Transparency | Opaque, Gemmological Tables (2004) | |||||||||||||
| Fluorescence & other light emissions | ||||||||||||||
| Fluorescence (Short Wave UV) | Yellow or orange, Gemmological Tables (2004) | |||||||||||||
| Crystallography of Larimar | ||||||||||||||
| Crystal System | Triclinic, Blue Chart Gem Identification (2010) | |||||||||||||
| Further Information | ||||||||||||||
| Mineral information: | Larimar information at mindat.org | |||||||||||||
| Significant Gem Localities | ||||||||||||||
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